Master Link
In The concept of Rigging, a Master Link is an oblong, permanently closed loop that is often found at the top of a multiple-leg chain assembly or wire rope bridle. Used so that multiple lifting cables can be connected to a single lifting point.In the context of Roller Chains, A master link or quick-release link is a roller chain accessory that allows convenient connection and disconnection of a chain without the need for a chain tool. It acts as a set of the chain's outer plates, so joining two sets of the chain's inner plate ends. A Master Link usually has a spring steel retainer which keeps the link in place.
Rigging
Master Link Diameters
Master Link are available on the FCH Network with Imperial/US diameters that range from #4 to 4 and with Metric diameters that range from M6 to M8.
Master Link Materials
Master Link are available on the FCH Network in materials that range from Steel to Superalloy (Inconel, Hastelloy, Alloy 20)
Master Link Finishes
Master Link are available on the FCH Network in finishes or coatings that range from Plain to Nickel Plated